transfer-audiodata.html

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This WPT test may be referenced by the following Test IDs:
- /html/infrastructure/safe-passing-of-structured-data/transfer-audiodata.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>MessageChannel transfer of AudioData</title>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script>

promise_test(async t => {

    const audioData = new AudioData({

        data: new Float32Array([0.1, 0.2, 0.3, 0.4]),

        format: "f32",

        sampleRate: 44100,

        numberOfFrames: 4,

        numberOfChannels: 1,

        timestamp: 0

});

    const channel = new MessageChannel();

    const received = new Promise(resolve => {

        channel.port2.onmessage = e => resolve(e.data);

});

    channel.port1.postMessage(audioData, [audioData]);

    const copy = await received;

    assert_true(copy instanceof AudioData);

    assert_equals(copy.numberOfFrames, 4);

    assert_equals(copy.numberOfChannels, 1);

    assert_equals(copy.sampleRate, 44100);

    copy.close();

}, "AudioData can be transferred through a MessageChannel");

</script>